QueryHintsExpandPartsTPart1, TPart2, TPart3, TPart4, TPart5, TPart6, TPart7 - метод

public QueryHints ExpandParts<TPart1, TPart2, TPart3, TPart4, TPart5, TPart6, TPart7>()
where TPart1 : ContentPart
where TPart2 : ContentPart
where TPart3 : ContentPart
where TPart4 : ContentPart
where TPart5 : ContentPart
where TPart6 : ContentPart
where TPart7 : ContentPart